The performance of true seed shallot lines under different environments of Ethiopia

Adama Science and Technology University, School of Agriculture, Nazret, Ethiopia (1)

Corresponding author:

(159.6 KB)

Selection on uniformity and yield stability in maize

Faculty of Agriculture, Belgrade-Zemun (1,4)
Agricultural Research Institute ”Serbia”, Belgrade (2)
Institute of Crop Production PKB INI ”Agroekonomik”, Belgrade (3)


Historically speaking, both the introduction of double-cross hybrids and use of single crosses have caused the increase in grain yield and significantly improved agricultural practice. Nowadays, the uniformity of crops is regarded as an advantage of modern agriculture, since the uniformity of products is crucial in global market. Thus, uniformity of crop maturation provides both planning and efficient mechanized harvest. F1 single-cross hybrids of maize, which is an allogamous species, not only exploit heterosis, but also impose homogeneity.

(182.63 KB)

Unstability of food production per capita and population: Asia

Faculty of Agriculture, Belgrade-Zemun (1)


The basic aims of this paper are: firstly, to set up an endogenous model of food production per capita and population; secondly, to estimate the food production per capita regression equation and population regression equation; and thirdly, to determine stability properties of food production per capita and population in Asia during the period 1967-1997. Empirical content of this model confirms the fact that movement of food production per capita and population had unstable character in Asia in the observed period.

(145.13 KB)

A chaotic growth model of agricultural population

Faculty of Agriculture, Belgrade-Zemun (1,2)


Using the autoregression models, the paper considers movement of agricultural population. Irregular movement of agricultural population can be analyzed within the formal framework of the chaotic growth model.

(117.08 KB)
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